WIT Press


Performance Of Higher Order Elements In The Analysis Of A Two Dimensional Acoustic Medium

Price

Free (open access)

Paper DOI

10.2495/BE990451

Volume

25

Pages

14

Published

1999

Size

1,342 kb

Author(s)

A.J.B. Tadeu & P.F.A. Santos

Abstract

The analysis of wave propagation via the Boundary Element Method (BEM) requires the description of the medium in terms of nodes at material discontinuities. The accuracy of the BEM solution improves as the number of the boundary elements and nodes inside each element increases. However, the improved accuracy and efficiency associated with the use of higher order elements is accompanied by an increase in the computational time needed to solve the equations generated. The present work assesses the benefit of using higher order elements by calculating the displacement and stress fields around a circular cylindrical cavity inclusion buried inside a two dimensional acoustic medium, for which the solution is known in closed form. In addition,

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